Are you forgetting about Charges and Panzerfausts? It would be fun, and this is a game. Why not add it?
You need a reason to add them in, not a reason to not do so.
And there is no reason to add them except the vicarious titillation of fan boys.
The US, Germany, and Russia do not get access to a 7.3 equivalent vehicle like the Japanese do. Not to mention this is a game where the T95 would actually be useful in its intended role.